This book is the fifth volume in the highly acclaimed
Pattern-Oriented Software Architecture (POSA) series, POSA1
was published in 1996 and hence this book is referred to as
POSA5. View
this page in Romanian courtesy of azoft.

Software patterns have revolutionized the way developers think about
how software is designed, built, and documented, and this unique book
offers an in-depth look of what patterns are, what they are not, and
how to use them successfully. This book addresses the question of
what a pattern language is and compares various pattern paradigms,
including pattern compounds, pattern complements, pattern collections,
pattern stories, and pattern sequences.